Attachment for binders



Nov. 8, 1927. I 1,648,621

C- J. POL-CHOW ATTACHMENT FOR BINDERS Filed Nov. 14, 1925 2 Sheets-Sheet l W t o INVENTOR WITNESSES Ch rles Ilalcka ATTORNEYS Patentetl Nov. 8, 1927.

UNITED STATES PATENT OFFICE.

CHARLESJ'. POLCHOW, OF BEIDGEVTATER, SJOU'IH DAKOTA.

ATTACHMENT FOR BINDERS. I

Application filed November 14, 1925. Sel'ial No. 69,124.

proper position so that the packers canwork.

the grain snugly against the springs, and so that the butter may make a perfect bundle out of all varieties of long or short grain.

The grain springs commonly employed become rapidly distorted in the course of ordinary use, and on binders as now constructed, no means is provided for tensioning these springs or rendering them efficient after they have once become weakened and bent. The springs frequently become so weakened that they donot approach within from two to four inches of the rain table, so that the grain slips under them, a poor bundle is made, and a lot of loose grain is lost.

An object of the present invention is to provide a grain spring holder which will serve to maintain the grain springs'in proper position at all times, which provides means for adjusting the tension on the grain springs, and which will in no way interfere with the normal operation of the binder.

Further objects are to provide an attachment of this character of extremely simple, rugged and durable construction, and an attachment which may be manufactured wit-h comparative economy, and which may be rapidly applied to an ordinary binder.

Vith the above noted and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter set forth and pointed out in the claims. The invention may be more fully understood from the following description in connection with the accompanying drawings, wherein,

Fig. 1 is a view in longitudinal section on the line 1-1 of Fig. 2, through the grain platform of a binder, showing the grain springs equipped with by improved attachment, and showing such of the conventional mechanism as will aid in understanding the operation of the device of the present invention.

Fig. 2 is a top plan view of 1.

Fig. 3 is a view in rear elevation of the grain spring holder and the frame work which. supports. the springs and holder.

Fig. 4 is a transverse sectional view on the line s't of Fig. 3. 7

- I have shown the device as applied to the well known Deming binder, although it is suitable for use in connection with various other types of binders-. In illustrating the invention 1 have omitted the packers, the butter, and other conventional mechanism not essential to an understanding of my improved grain springattachment.

The grain platform is indicated at 10, and 11 represents'the cross bar which mounts the grain springs 12, these springs each comprising a wire finger coiled to form eyesat '13, which encircle the bar 11, and adapted by "thei-r inherent resiliency to form a stop for the grain on the platform against which the packers force the loose grain.

As noted above, in the n' rinal operation of the machine the ejector arms 14 in the operation of successively forcing a number of bundles under the grain springs and off of the platform soon weaken and distort the springs so that they become ineffective, and the grain readily slips therethrough, with the result that poor bundles are made and a great deal of the grain is lost. This is particularly .true in handling heavy Wheat, or in handling short grain of any kind.

In accordance with the present invention, 1 connect the grain springs adjacent their free ends by cross bar 15, this bar carrying hook bolts 16 which engage the springs. The cross bar aids materially in preventing the passage of grain between the springs. For exerting tension on the grain springs, and for regulating the tension which is exerted, 1 secure an arm 1'? to the intermediate portion of cross bar 15 by rivets 18 or other suitable securing devices. The arm 17 projetts upwardly from the cross bar, and is formed with an opening 19 near its upper end, receiving the threaded shank of a tie bolt 20. The tie bolt is prevented from pulling out of the arm by the use of an adjusting nut 21 on the end of the bolt.

Supported forwardly of the cross bar 11 is a frame bar 22 carried on bracket arms 23 secured to, and projecting forwardly from the cross bar 11. Bar 22 is provided with a number of openings 24 therein for ,the reception of the bolts 25 which connect 1t to the bracket arms 23, so that the distance between the arms 23 may be, conveniently varied. It

will be noted that the arms 23 include ofiset portions 26 which serve to spacethemember 22, not only forwardly, but below the bar 11. A hook member 27 secured in one of the openings 24 serves as an anchorage for one end of a coiled contractile spring 28, the other end of which is detachably engaged with the tie bolt 20.

It will be evident that the spring 28 normally tends to swing the grain springs 12 downwardly against the grain platform, and that by adjusting the nut 21, the tension of the spring 28 may be accurately regulated.

It will also be noted that due to the cross bar 15,the tension on both grain springs will always be the same, andthere is no danger of one grain springbecoming weakened or distorted. a i

From the foregoing description it will be apparent that the novel apparatus for insuring and predetermining tension on the grain springs, will result in so holding the grain springs that the packers (not shown) can work the grain snugly against the springs.

.Various changes and alterations might be made in the general form and arrangement of parts described, without departingfrom the invention. Hence I do not wish'to limit myself to the details set forth, but shall consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. In a binding machine, the combination with a grain platform, a cross bar adjacent the platform, and grain springs carried by the cross bar, of means connecting the grain springs together near their free ends, and a tension spring acting on said means.

2. In a binding machine, the combination with a cross bar and ,a pair of grain springs mounted thereon, of a member unitingthe springs adjacent their free ends.

3. In a binding machine, thecombination with a cross bar and a pair of grain springs mounted thereon, of a memberuniting the springs adjacenttheir free ends, an anchoring frame rigidly spaced from the crossbar and carried thereby, an'da coiled contractile spring connecting the anchoring frame and the member which connects the free ends of the grain springs.

af'lhe combination with i a transverse frame bar and a pair of grain springs carried thereby, of a cross bar conneeting the free ends of the grain springs, an arm. rising from the cross bar, an anchoring frame spaced from the first mentioned transverse frame bar, a coiled spring anchored to said frame, and an adjustable tie boltconneeting the coiled spring and the arm.

h CHARLES J POLGHOW. 

